1*15572fcfSgkoehler/* $OpenBSD: ffs.S,v 1.3 2020/11/28 19:49:30 gkoehler Exp $ */ 2d41240faSnaddy/* 3d41240faSnaddy * Written by Christian Weisgerber <naddy@openbsd.org>. 4d41240faSnaddy * Public domain. 5d41240faSnaddy */ 6d41240faSnaddy 7d41240faSnaddy#include <machine/asm.h> 8d41240faSnaddy 9d41240faSnaddyENTRY(ffs) 10*15572fcfSgkoehler RETGUARD_SETUP(ffs, %r11, %r12) 11d41240faSnaddy neg %r4, %r3 12d41240faSnaddy and %r3, %r3, %r4 13d41240faSnaddy cntlzw %r3, %r3 14d41240faSnaddy subfic %r3, %r3, 32 15*15572fcfSgkoehler RETGUARD_CHECK(ffs, %r11, %r12) 16d41240faSnaddy blr 17d41240faSnaddyEND(ffs) 18